Comber, Norman Mederson,  1888-1953 <br/><br/>
An introduction to agricultural chemistry/ 
by Norman M. Comber, J. S. Willcox, and W. N. Townsend 
 - 2d ed. 
 - London:  Arnold ,  1953 
 - 348 p. :  illus. ;  20 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural chemistry